An unknown error that are annoying some my players. Npcs close after click;

[tmav94 1]

Hi, guys!

I'm getting some trouble with this issue...The server is work fine and is up-to-date and dont have any issues in server emulator screens...

I have a server with 74 players, and 23 are get this problem...Look the video...

http://www.ragnatrek.org/download/video-1444852140.mp4.mp4

Anyone know what is it? and Why its happen!?

The users related that have a stable connection and only on my server they get this problem...The operational system is Win7 to Win10.

The strange thing is that I have tested on windows 7 and windows 10 in two different locations and did not catch this error ... I'm beginning to think it is the location or any thing installed on the user machine.


Otherwise...i lear in somewhere that you can disable in source the Safety AutoClose Npc Dialogs. I think that i'll do this if nobody know how to fix this issue.
 

The client is 2013-08-07 

 

[evilpuncker 504]

I can't see clearly what is the error about in the video, but maybe it is related to this? make sure that your waper/healing npcs are fully updated

[15peaces 18]

Since I've seen this also on rAthena... what emu are you using? ^^"